Broadcast A/V Division
VDA-108-3GS
1x8 3G/HD/SD-SDI Re-Clocking
Distribution Amplifier
User Manual
VDA-108-3GS Manual
Safety Instructions
1. Introduction
2. Features
3. Package Contents
4. Specifications
5. Panel Descriptions
6. Hardware Installation
7. Connection Diagram
Table of Contents
01
02
02
02
03
04
05
05
Safety Instructions
The VDA-108 -3GS 1x8 3G/HD/SD-SDI Re-clocking Distribution Amplifier has been tested for
conformance to safety regulations and requirements and has been certified for international use.
However, like all electronic equipment, the VDA-108 -3GS should be used with care. Please read
and follow the safety instructions to protect yourself from possible injury and to minimize the risk
of damage to the unit.
• Follow all instructions and warnings marked on this unit.
• Do not attempt to service this unit yourself, except where explained in this manual.
• Provide proper ventilation and air circulation and do not use near water.
• Keep objects that might damage the device and assure that the placement of this unit is on a
stable surface.
• Use only the power adapter and power cords and connection cables designed for this unit.
• Do not use liquid or aerosol cleaners to clean this unit. Always unplug the power to the device
before cleaning.
www.marshall-usa.com2 1
VDA-108-3GS Manual
1. Introduction
The V DA -10 8 -3 GS receives one SDI input, perfectly duplicates it, and re-transmits eight SDI outputs
for real time multi-viewing. It is a reliable video device splitting a SDI, HD-SDI, or 3G-SDI video
source to eight SDI compliant displays at the same time. Besides, built-in re-clocking & equalization
features provide the best performance for SDI distribution amplifier.
2. Features
• 3G/HD/SD triple-rate distribution
• Eight separately buffered and re-clocked outputs
• Supported SDI format
» 3G-SDI (SMPTE 424M, 425M level A, B up to 2.97 Gbps)
» HD-SDI (SMPTE 292M, 296M up to 1.485 Gbps)
» SD-SDI (SMPTE 259M, up to 270 Mbps)
• Cable equalization (Belden 1694A) and signal retiming
• Video bandwidth: 2.97Gbps, 2.97/1.001Gbps
• Automatic detection of 3G/HD/SD-SDI signals
• Dual color LED indication of input lock and rate
• Passes all ancillary data
4. Specifications
Model Name VD A-10 8 - 3 GS
Technical
SDI standards SD/HD/3G-SDI
Auto 3G/HD/SD detection Yes
Supported protocols SMPTE 259M, SMPTE 292M, SMPTE 424M, SMPTE425M
Video bandwidth [2.97Gpbs & 2.97/1.001Gbps]
Data rates 270 / 1483 / 1485 / 2970 Mbps
Output impedance 75
Re-clocking function Ye s
Cable equalization [3G-SDI] >120m (394ft) / [HD-SDI] >200m (656ft) / [SD-SDI] >300m (984ft)
Audio support Yes
RP-198 pathological patterns Immune
PCB stack-up 4-layer board [impedance control — differential 100 ; single 50 ]
Input 1x BNC [SDI]
Output 4x BNC [SDI]
BNC connector 75 inter-locked socket
Eye pattern characteristics
[HD]
Mechanincal
Amplitude: Within 800mV ±3% (<10%) Long time jitter: 0.195 UI (<1.0 UI)
Rise overshoot: Less than 2% (<10%) Timing jitter: 0.195 UI (<1.0 UI)
Fall overshoot: Less than 2% (<10%) Alignment jitter: 0.127 UI (<0.2 UI)
• Provides automatic cable equalization
» [3G]* >120m (400ft)
» [HD] >200m (667ft)
» [SD] >300m (1000ft)
• Re-clocks SDI signals for cascading and thus longer transmission
• Inter-locked power supply for better fixedness
Note: The cable length depends on the characteristics and quality of the cables.
3. Package Contents
• 1x VDA-108-3GS
• 1x 5V power adapter
• 1x User Manual
Housing Metal enclosure
Model 120.5 x 41.4 x 24.2mm [4.7” x 1.6” x1”]
Dimensions
[L x W x H]
Weight
Fixedness Inter-locked power supply
Power supply 5V 2A DC
Power consumption 1.3 Watts [max]
Operation temperature 0~40°C [32~104°F]
Storage temperature -20~60°C [-4~140°F]
Relative humidity 20~90% RH [no condensation]
Package 175 x 128 x 134mm [6.9" x5" x5.3"]
Carton 662 x 366 x 290mm [2'2" x 1'2" x 1']
Model 259g [0.6 lbs]
Package 525g [1.2 lbs]
Note: The measurement results are from Tektronix WFM-7120 with SDI through 1m (3.3ft) long
Belden 1694A
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VDA-108-3GS Manual
5. Panel Descriptions
Front Panel
1 2 3 4 5
1. 3G/HD/SD-SDI Output
2. 3G/HD/SD-SDI Output
3. 3G/HD/SD-SDI Output
4. 3G/HD/SD-SDI Output
5. 5V DC power jack
Rear Panel
6. Hardware Installation
1. Connect a camera or other devices equipped with 3G/HD/SD-SDI outputs to VDA-108-3GS 3G/
HD/SD-SDI input.
2. Connect devices equipped with 3G/HD/SD-SDI inputs (e.g. monitors or video processors) to
VDA-108-3GS 3G/HD/SD-SDI outputs.
3. Plug power adapter cable into 5V DC power jack.
7. Connection Diagram
Display with COAXIAL input
Camera
6
7 8 9 10 11 12 13 14
6. Power LED indicator
7. 3G/HD/SD-SDI Input
8. 3G Signal LED indicator
9. HD Signal LED indicator
10. SD Signal LED indicator
11. 3G/HD/SD-SDI Output
12. 3G/HD/SD-SDI Output
13. 3G/HD/SD-SDI Output
14. 3G/HD/SD-SDI Output
www.marshall-usa.com4 5
20608 Madrona Avenue, Torrance, CA 90503
Tel: (800) 800-6608 / (310) 333-0606 • Fax: 310-333-0688
www.marshall-usa.com
support@marshall-usa.com
W
arranty
For Warranty information please refer to Marshall website page:
https://marshall-usa.com/company/warranty.php
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